Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracking the pointed object's expected NDR type or ownership. When the same ref-id is reused across two pointer fields, the parser assigns the same heap object to both output fields. The generic destructor later walks each field independently and destroys/frees both pointers. This causes a malicious-server-triggerable heap use-after-free / double-free in the FreeRDP client's RDPEAR authentication-redirection path. This vulnerability is fixed in 3.26.0.
Affected products
freerdp: freerdp
References7
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-j… ExploitMitigationVendor Advisory
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-j… ExploitMitigationVendor Advisory
- access.redhat.com/errata/RHSA-2026:36203
- access.redhat.com/errata/RHSA-2026:46393
- access.redhat.com/security/cve/CVE-2026-44422
- bugzilla.redhat.com/show_bug.cgi?id=2483467
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44422…
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 38 · as of 15 November 2026
- CWE
- CWE-415CWE-416CWE-825
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